Finding the Fourth Proportional to 152,297, 210,140.70 and 98,574.56

Step by Step Solution

1. Step 1: Write the proportion equation
   152,297 : 210,140.70 = 98,574.56 : x
2. Step 2: Convert to fraction form
   152,297/210,140.70 = 98,574.56/x
3. Step 3: Cross multiply
   152,297x = 210,140.70 × 98,574.56
4. Step 4: Simplify right side
   152,297x = 20,714,527,040.59
5. Step 5: Solve for x
   x = 20,714,527,040.59/152,297
6. Step 6: Final answer
   x = 136,014.02